Hi Mike,
You may take a look of  system/core/init/device.c.

Cheers,
Tick

On Tue, Dec 8, 2009 at 5:28 AM, ms12 <[email protected]> wrote:
> I have a GSM radio connected via the USB port on a beagle board.  If I
> type chmod 0666 /dev/ttyUSB1 at the console, it connects to the radio
> just fine.  If I put the chmod in init.rc, the permissions don't get
> set.  I believe the reason is /dev/ttyUSB1 is created after init
> because of the time to do the USB probing and USB/serial setup.
>
> I tried adding
>
> on device-added-/dev/ttyUSB1
>    chmod 0666 /dev/ttyUSB1
>    chown radio radio /dev/ttyUSB1
>
> to init.rc, but this does not seem to work either.
>
> Is there any way to get the permissions set during init on a USB/
> serial device?
>
> Mike
>
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